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AmbitionBox Sdet Lead Interview Questions and Answers

Updated 15 Sep 2023

AmbitionBox Sdet Lead Interview Experiences

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Sdet Lead Interview Questions & Answers

user image Anonymous

posted on 15 Sep 2023

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Aug 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Coding Test 

2 medium level and 1 hard question from dsa

Round 3 - HR 

(1 Question)

  • Q1. Asked about myself and managerial questions

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I applied via Recruitment Consulltant and was interviewed in Mar 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 

I am pavani thank u for wonderful opportunity i prove my talent in ur company

Round 2 - Technical 

(1 Question)

  • Q1. Computer base questions

Interview Preparation Tips

Topics to prepare for LinkedIn Consultant interview:
  • Java
  • MS Office
  • Ms World
  • Javascript
Interview preparation tips for other job seekers - Please ask computer base questions because I am bsc student
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Jul 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - HR 

(2 Questions)

  • Q1. Why this job ,why do you want to get into it
  • Q2. What were you doing before this

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident answer it wisely,HR dont know anything technically so be wise

I was interviewed in Dec 2016.

Interview Questionnaire 

1 Question

  • Q1. Tell me about yourself tell me about your internship My interview was unstructured(i.e based on your reply interviewer was asking Questions)

Interview Preparation Tips

Round: Test
Experience: Questions were very difficult and solving one Question gets you shortlisted for interview
I don't remember the Questions
Duration: 1 hour 30 minutes
Total Questions: 2

Skills: Internship Work, Inter Person Communication Skills
College Name: IIT Roorkee

Interview Preparation Tips

Round: CODING ROUND
Experience: In the coding round there were 3 questions to be solved in about 3 hrs.

Round: HR Interview
Experience: Expect the usual crazy questions like "Why LinkedIn?" and if you are already placed, be ready to give a proper justification for "Why LinkedIn and not XYZ?" so on. Be cool, you need not be accurate. Be well prepared with your resume and expect questions from them.
Tips: For the interview, just be confident and have a good resume ready with you.

Round: Other Interview
Experience: Coding Interview:
Simple coding questions. Make sure you first explain the logic to them and then you may be asked to write the code for it on the board using any language of your choice. Syntax is not a big deal, but don't make any logical errors. They are very friendly and may suggest certain solutions of their own. Make sure you can grasp them quickly. Find faults in your own code before they find it. Always try to give the best optimal solution. In case you are unable to do so then suggest possible improvements.

Round: Other Interview
Experience: Design Interview:
Some people may find this round a bit uneasy. But this round tests how good you are at designing solutions to problems. Most of the candidates were asked to build an online gaming system. And then they keep adding extra constraints and ideas and see if you can integrate them to your design. Database knowledge may be tested. They may also ask questions pertaining to you projects listed in your resume.

General Tips: An updated LinkedIn account with decent connections. ;)
Skill Tips: Be very strong with your coding ability. Whenever you code, do follow some standard procedures and make the code look simple and structured. Whenever you solve a coding question make sure you answer it completely for all the test cases. Partial results will only indicate that there is something wrong with the logic. Try to solve a complete question rather than multiple questions with partial results.
College Name: NIT SURATHKAL

Interview Preparation Tips

Round: Test
Experience: Three questions of increasing difficulty level. The first one was on string manipulation, the second was based on the iterative version of the merge sort algorithm and the last one on dynamic programming.
Total Questions: 3

Round: Other Interview
Experience: Eight students were selected for this stage which consisted of three separate interviews. The first one was on algorithms and programming, the second on system design and the third was HR. In the algorithms and programming interview I was asked two questions. The interviewer asked me to first explain the proposed algorithm and then I was expected to write the code on a white board they had provided. Three weeks after the interviews the selected candidates were informed through the concerned placement coordinator.

General Tips: Don't panic, the interviewers don't expect you to come up with the optimum result directly and they will give you enough time to refine your solution.
Skill Tips: No special preparation is required. Just make sure that you have understood the fundamentals
of Data Structures and Algorithms well.
College Name: NIT SURATHKAL

Interview Preparation Tips

General Tips: It might help in general to try to become a better developer at all times. One way to get good at it is to really enjoy what you do!Do random projects, use linux, Read Hacker News (-----/)  daily and wear hippie computer t-shirts (:-P) - Interviewers really LOVE talking about these, especially HR rounds (my HR interviewer was also a programmer).
College Name: NIT SURATHKAL

I was interviewed before Mar 2021.

Round 1 - Coding Test 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This was a 1 hour online coding round on hackerrank platform. 3 DSA questions were given.

  • Q1. 

    Stock Trading Maximum Profit Problem

    Given the stock prices for 'N' days, your goal is to determine the maximum profit that can be achieved. You can buy and sell the stocks any number of times but can onl...

  • Ans. 

    The goal is to determine the maximum profit that can be achieved by buying and selling stocks on different days.

    • Iterate through the stock prices and buy on days when the price is lower than the next day, and sell on days when the price is higher than the next day.

    • Calculate the profit by summing up the differences between buying and selling prices.

    • Repeat the process for each test case and output the maximum profit possi

  • Answered by AI
  • Q2. 

    Ninja's Complement Problem Statement

    Every day, Ninja dreams of a number but does not understand its significance. Upon investigation, Ninja discovers that converting this number to binary, taking its com...

  • Ans. 

    Convert a number to binary, take its complement, and convert back to decimal.

    • Convert the given number to binary representation

    • Take the complement of the binary number by swapping '1's and '0's

    • Convert the complement back to decimal representation

    • Return the complement number for each test case

  • Answered by AI
  • Q3. 

    Bit Majority Number Generation

    You are given an array arr consisting of N integers. Construct a number from these integers such that, for each bit position, if the quantity of set bits (1s) is greater tha...

  • Ans. 

    Generate a number based on majority set bits in given integers array.

    • Iterate through each bit position and count set and unset bits

    • Construct the resulting number based on majority set bits at each position

    • Return the final constructed number

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

In this round, a DSA question was first asked. Then a lot of discussion regarding the various test cases around this question took place. (e.g, handing of -ve numbers , decimals , overflow etc).
Main concentration was just to get as many as test cases possible and an efficient solution as well.
And Some common question like why you coding in C++?

  • Q1. 

    Sum of Digits Problem Statement

    Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...

  • Ans. 

    Given an integer, sum its digits until a single-digit number is obtained.

    • Iteratively sum the digits of the integer until a single-digit number is reached

    • Output the final single-digit integer for each test case

    • Handle multiple test cases efficiently

  • Answered by AI
  • Q2. What are the advantages of Object-Oriented Programming (OOP)?
  • Ans. 

    OOP allows for code reusability, modularity, and easier maintenance.

    • Encapsulation: Bundling data and methods together to protect data from outside interference.

    • Inheritance: Allows for the creation of new classes based on existing classes, promoting code reuse.

    • Polymorphism: Objects can be treated as instances of their parent class, allowing for flexibility and extensibility.

    • Modularity: Breaking down a program into small...

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Easy

Again one coding question to be done on shared screen

  • Q1. 

    Counting Triangles in Graphs

    Given two graphs – a directed graph DIR_GRAPH and an undirected graph UNDIR_GRAPH – you are tasked with counting the number of triangles in each of the graphs.

    Example:

    In t...

  • Ans. 

    Count the number of triangles in a directed and undirected graph.

    • Parse the input to extract vertices, edges, and edges between vertices.

    • Implement a function to count triangles in both directed and undirected graphs.

    • Return the counts of triangles for each test case.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALinkedIn interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewRejected

Skills evaluated in this interview

I was interviewed before Mar 2021.

Round 1 - Video Call 

(5 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions based on DSA, UNIX commands , Web Security etc.

  • Q1. 

    Find The Repeating And Missing Number Problem Statement

    You are provided with an array nums which contains the first N positive integers. In this array, one integer appears twice, and one integer is missi...

  • Ans. 

    Identify the repeating and missing number in an array of first N positive integers.

    • Iterate through the array and keep track of the sum of elements and sum of squares to find the missing and repeating numbers.

    • Use a set to identify the repeating number and calculate the missing number using the sum formula.

    • Handle multiple test cases by looping through each case and applying the same logic.

    • Example: For nums = [1, 2, 3, 4,...

  • Answered by AI
  • Q2. What is the difference between the 'ps' and 'top' commands?
  • Ans. 

    ps displays a snapshot of current processes, while top provides real-time information and allows for interactive management.

    • ps displays a static list of processes, while top continuously updates the list

    • top allows for interactive management of processes (e.g. killing, renicing), while ps does not

    • ps is useful for a quick snapshot of processes, while top is useful for monitoring real-time system activity

  • Answered by AI
  • Q3. What is cross-site scripting (XSS)?
  • Ans. 

    Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users.

    • XSS occurs when a web application allows users to input unvalidated data that is then displayed on the page without proper encoding.

    • There are three main types of XSS: stored XSS, reflected XSS, and DOM-based XSS.

    • An example of XSS is when a user inputs a script into a sear...

  • Answered by AI
  • Q4. How can you prevent SQL injection?
  • Ans. 

    Prevent SQL injection by using parameterized queries, input validation, and escaping user input.

    • Use parameterized queries to separate SQL code from user input.

    • Validate and sanitize user input to prevent malicious code injection.

    • Escape special characters in user input before executing SQL queries.

  • Answered by AI
  • Q5. What is the command to kill all running Java processes?
  • Ans. 

    The command to kill all running Java processes is 'pkill -f java'

    • Use the 'pkill' command followed by the '-f' flag and 'java' keyword to kill all Java processes

    • Be cautious when using this command as it will terminate all running Java processes

    • Make sure to have the necessary permissions to kill processes on the system

  • Answered by AI
Round 2 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Questions based on designing. My first project as it was related to Image processing, so he also asked questions related to it.

  • Q1. Design a complete system for a traffic enforcement camera.
  • Ans. 

    Design a system for a traffic enforcement camera.

    • 1. Install cameras at strategic locations to monitor traffic violations.

    • 2. Use image recognition software to detect violations such as speeding or running red lights.

    • 3. Store captured images and violation data in a secure database.

    • 4. Generate automated tickets and send them to violators.

    • 5. Implement a user interface for law enforcement to review violations and approve ti

  • Answered by AI
  • Q2. How does JSON (JavaScript Object Notation) work?
  • Ans. 

    JSON is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate.

    • JSON is based on key-value pairs, where keys are always strings enclosed in double quotes.

    • Data is organized in a hierarchical structure using objects and arrays.

    • Example: {"name": "John", "age": 30}

    • Example: [{"name": "Alice", "age": 25}, {"name": "Bob", "age": 35}]

  • Answered by AI
  • Q3. What software testing frameworks are you familiar with?
  • Ans. 

    I am familiar with testing frameworks such as JUnit, Selenium, and TestNG.

    • JUnit

    • Selenium

    • TestNG

  • Answered by AI
  • Q4. What is the best protocol for storing images?
  • Ans. 

    The best protocol for storing images is JPEG (Joint Photographic Experts Group).

    • JPEG is a widely used format for storing images due to its high compression ratio and good image quality.

    • It supports millions of colors and is compatible with most devices and software.

    • Other options include PNG (Portable Network Graphics) for lossless compression and GIF (Graphics Interchange Format) for animations.

  • Answered by AI
Round 3 - HR 

Round duration - 30 minutes
Round difficulty - Easy

This was a typical HR round with questions related to my final year project and some behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALinkedIn interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, UNIX Commands, Javascript, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed before Mar 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Technical round with questions based on DSA. Also, there was a discussion on my BTP project.

  • Q1. 

    Longest Palindromic Subsequence Problem Statement

    Given a string A consisting of lowercase English letters, determine the length of the longest palindromic subsequence within A.

    Explanation:

    • A subsequ...
  • Ans. 

    Find the length of the longest palindromic subsequence in a given string of lowercase English letters.

    • Use dynamic programming to solve this problem efficiently.

    • Create a 2D array to store the lengths of palindromic subsequences for different substrings.

    • Fill the array diagonally based on the characters in the string.

    • Return the length of the longest palindromic subsequence for each test case.

  • Answered by AI
  • Q2. 

    Binary Tree to Doubly Linked List

    Transform a given Binary Tree into a Doubly Linked List.

    Ensure that the nodes in the Doubly Linked List follow the Inorder Traversal of the Binary Tree.

    Input:

    The fi...
  • Ans. 

    Convert a Binary Tree into a Doubly Linked List following Inorder Traversal.

    • Perform Inorder Traversal of the Binary Tree to get the nodes in order.

    • Create a Doubly Linked List by linking the nodes in the order obtained from Inorder Traversal.

    • Return the head of the Doubly Linked List as the output.

  • Answered by AI
  • Q3. 

    Palindrome Permutation - Problem Statement

    Determine if a permutation of a given string S can form a palindrome.

    Example:

    Input:
    string S = "aab"
    Output:
    "True"
    Explanation:

    The permutation "aba" o...

  • Ans. 

    Check if a permutation of a string can form a palindrome.

    • Create a frequency map of characters in the string.

    • Count the number of characters with odd frequencies.

    • If there is at most one character with an odd frequency, return true.

    • Otherwise, return false.

  • Answered by AI
Round 2 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Technical interview round where the interviewer asked me questions based on DSA , algorithms and my project. Large set of questions pertaining to DBMS.

  • Q1. 

    Serialize and Deserialize Binary Tree Problem Statement

    Given a binary tree of integers, your task is to implement serialization and deserialization methods. You can choose any algorithm for serialization...

  • Ans. 

    Implement serialization and deserialization methods for a binary tree of integers.

    • Use any algorithm for serialization and deserialization.

    • Ensure the serialized string can be correctly decoded back to form the original binary tree.

    • Nodes are separated by spaces, and -1 is used to depict a null node.

    • Output the level order traversal of the deserialized binary tree with nodes separated by single spaces.

  • Answered by AI
  • Q2. 

    Shuffle Two Strings

    You are provided with three strings: A, B, and C. Your task is to determine if C is formed by interleaving A and B. A string C is considered an interleaving of A and B if:

    • The lengt...
  • Ans. 

    Determine if a string C is formed by interleaving two strings A and B.

    • Check if the length of C is equal to the sum of lengths of A and B.

    • Ensure all characters of A and B are present in C.

    • Verify that the order of characters in C matches the order in A and B.

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This was a design round where I was grilled on my internship , projects and some new design questions were also asked.
Q1. Design a work flow model of the entire work done in your internship.
Q2. Design a workflow model of any one of the projects you did.

  • Q1. Describe a map-based design for implementing a code that checks for isomorphic words in a file.
  • Ans. 

    Using a map-based design to check for isomorphic words in a file.

    • Create a map where the key is the sorted characters of a word and the value is a list of words with the same sorted characters.

    • Iterate through the file, for each word, sort its characters and check if it exists in the map. If it does, add the word to the list. If not, create a new entry in the map.

    • After processing the file, iterate through the map and out

  • Answered by AI
  • Q2. 

    Stack with getMin Operation

    Create a stack data structure that supports not only the usual push and pop operations but also getMin(), which retrieves the minimum element, all in O(1) time complexity witho...

  • Ans. 

    Implement a stack with push, pop, top, isEmpty, and getMin operations in O(1) time complexity without using extra space for storing additional stack data structures.

    • Use two stacks - one to store the actual elements and another to store the minimum element at each level of the main stack.

    • When pushing an element, compare it with the current minimum and update the minimum stack accordingly.

    • For getMin operation, simply ret...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALinkedIn interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

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AmbitionBox Interview FAQs

How many rounds are there in AmbitionBox Sdet Lead interview?
AmbitionBox interview process usually has 3 rounds. The most common rounds in the AmbitionBox interview process are Resume Shortlist, Coding Test and HR.

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